Keyhole-bearing



(No Model.)

A. J. WARNER.

KEYHOLE BEARING.

No. 554,807. Patented Feb. 18, 1896.

/''5 i. e- W l illil l lil li[Wllllllllllllllllllll WITNESSES: INVENTOI?I l wfldeZ6erJ77arrwn A 7TOHNEYS ADELBERT J. W'ARNER,

KEYHOLE- OF CHICAGO, ILLINOIS.

BEARING.

SPECIFICATION forming part of Letters Patent No. 554,807, dated February18, 1896.

Application filed April 3, 1895. $erial No. 5&4,824. (No model.)

To all whom, it may concern:

Be it known that I, ADELBERT J. WARNER, of Chicago, in the county ofCook, State of Illinois, have invented an Improved Keyhole- Bearing andMethod of Making the Same, of which the following is a description.

This invention relates to an improved keyhole-bearing in the case andcap of sheetmetal locks.

Objection has been made to sheet-metal casesand caps on account of thesmall bearing for the key, and to avoid this objection numerouscontrivances have been devised, such as separate bearing collars orwashers riveted to the case, and in some constructions eyelets have beenriveted in the keyhole. All these methods, however, are laborious andexpensive, and it is with the view of avoiding these objections that Ihave devised my improved keyhole -bearing, which consists in drawingthecase and cap inward or outward to form the bearing, and also bendingin a portion of the metal at the edge of the keyhole-slot to form award.

My invention consists also in certain details hereinafter referred to,and pointed out in the claim.

In the drawings hereto annexed, Figure 1 is a viewshowing thesheet-metal case or cap provided with my improved keyhole bearing andward. Fig. 2 is a view on the line .2 z of Fig. 1. Fig. 3 is a viewillustrating the manner of making the bearing and ward.

In applying my invention I employ a thin sheet-metal steel oase and capA and stamp or punch the keyhole B, such hole being much smaller thanthe hole when finished, and it will also be noticed that a portion ofmetal C is left between the upper and lower portions of the slot. Thiscan be arranged at any desired point between the ends of the slot. Afterthe small hole B is punched the metal is drawn in any suitable manneruntil the hole is the desired size to receive the key. In so drawing themetal a key-bearing is formed, and this bearing also forms a ward, thusanswering a double purpose. The portion C is now cut away at one sideand pressed inward, as shown, providing a second ward.

It will thus be seen that I provide a key bearing and ward at oneoperation, and also produce as many additional wards as maybe desired,and all integral with the cap or case.

It will thus be seen that I provide a bearing which is simpler andcheaper than those heretofore used, and one which serves a doublepurpose.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

As an improved article of manufacture, a sheet-metal lock-case, havingone or both faces provided with a keyhole-bearing, integral with theface of the case, said bearing being drawn inward, and the key ward orwards formed integral with the edge of the keyholeslot, and turnedinward, substantially as shown and described.

In testimony whereof I affix my signature in the presence of twowitnesses.

ADELBERT J. WARNER.

Witnesses CHAS. E. BROOK, GERTRUDE A. HIGHAM.

